CZ miniSTM32F103VE-EK
STM32F103VET6
Board
| Name | CZ miniSTM32F103VE-EK |
| Part | Unknown |
| Brand | Unknown |
| Origin | China |
Microcontroller
| Part | STM32F103VET6 |
| Manufacturer | ST-Microelectronics |
| Core | Arm Cortex-M3 |
| Max. Clock Speed | 72MHz |
| Package | LQFP 100 pins |
Internal memories
| FLASH | 512KiB |
| SRAM | 48KiB |
Oscillators
| HSI | 8MHz |
| LSI | 40kHz |
| HSE | 8MHz |
| LSE | 32.768kHz |
Power
| Sources | Any +3.3V pin (+3.3V) Any +5V pin (+5V) USB connector (+5V) |
| VDDA pin | No |
| VSSA pin | No |
| VREF- pin | No |
| VREF+ pin | Yes |
| Backup battery | Holder (12.5mm / 12) |
Regulator
| Manufacturer | Advanced Monolithic Systems Inc. |
| Part | AMS1117 (AMS1117) |
| Package | SOT223 3 pins |
| Input | +4.6V to +15V |
| Output | +3.3V @ 1A |
| Datasheet | AMS1117.pdf |
PCB
| Color | Blue |
| Size (w x l) | 76mm x 105mm |
| Mounting | 4x mounting hole (M3) |
Remarks
- Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.
Pictures
Outputs
Inputs & outputs
Reset button
| Name | RESET |
| Reference | K1 |
| Type | Button |
| Connected to | NRST |
| Mode | Active low |
BOOT0 jumper
| Name | - |
| Reference | - |
| Type | 2-way jumper |
| Connected to | BOOT0 |
| Mode | N.A. |
- Note: This jumper is part of Header 2.
BOOT1 jumper
| Name | - |
| Reference | - |
| Type | 2-way jumper |
| Connected to | PB2 |
| Mode | N.A. |
- Note: This jumper is part of Header 2.
User button 1
| Name | - |
| Reference | K2 |
| Type | Button |
| Connected to | PE3 |
| Mode | Active low |
User button 2
| Name | - |
| Reference | K3 |
| Type | Button |
| Connected to | PC5 |
| Mode | Active low |
Serial to USB Rx jumper
| Name | MCU_RXD |
| Reference | J7 |
| Type | 1-way jumper |
| Connected to | PA10 |
| Mode | N.A. |
- Note: Connects microcontroller Rx to CH340G Tx.
Serial to USB Tx jumper
| Name | MCU_TXD |
| Reference | J7 |
| Type | 1-way jumper |
| Connected to | PA9 |
| Mode | N.A. |
- Note: Connects microcontroller Tx to CH340G Rx.
Power source switch
| Name | Pwr sw |
| Reference | - |
| Type | Switch |
| Connected to | +5V USB |
| Mode | N.A. |
Power LED
| Name | Pwr |
| Reference | DS3 |
| Type | LED |
| Connected to | +3.3V rail |
| Mode | N.A. |
User LED 1
| Name | - |
| Reference | DS1 |
| Type | LED |
| Connected to | PE5 |
| Mode | Sink |
User LED 2
| Name | - |
| Reference | DS2 |
| Type | LED |
| Connected to | PE6 |
| Mode | Sink |
Connectors & headers
Header 1 properties
| Name | Unknown |
| Reference | J1 |
| Type | Pin header (2.54mm, 23x2, male) |
Header 1 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | GND | - | Ground plane |
| 2 | 3V3 | - | +3.3V rail |
| 3 | PC0 | - | PC0 |
| 4 | PC1 | - | PC1 |
| 5 | PC2 | - | PC2 |
| 6 | PC3 | - | PC3 |
| 7 | 3V3 | - | +3.3V rail |
| 8 | VREF | - | VREF+ |
| 9 | PA0 | - | PA0 |
| 10 | PA1 | - | PA1 |
| 11 | PA2 | - | PA2 |
| 12 | PA3 | - | PA3 |
| 13 | PA4 | - | PA4 |
| 14 | PA5 | - | PA5 |
| 15 | PA6 | - | PA6 |
| 16 | PA7 | - | PA7 |
| 17 | PC4 | - | PC4 |
| 18 | PC5 | - | PC5 |
| 19 | PB0 | - | PB0 |
| 20 | PB1 | - | PB1 |
| 21 | PB2 | - | PB2 |
| 22 | PE7 | - | PE7 |
| 23 | PE8 | - | PE8 |
| 24 | PE9 | - | PE9 |
| 25 | PE10 | - | PE10 |
| 26 | PE11 | - | PE11 |
| 27 | PE12 | - | PE12 |
| 28 | PE13 | - | PE13 |
| 29 | PE14 | - | PE14 |
| 30 | PE15 | - | PE15 |
| 31 | PB10 | - | PB10 |
| 32 | PB11 | - | PB11 |
| 33 | PB12 | - | PB12 |
| 34 | PB13 | - | PB13 |
| 35 | PB14 | - | PB14 |
| 36 | PB15 | - | PB15 |
| 37 | PD8 | - | PD8 |
| 38 | PD9 | - | PD9 |
| 39 | PD10 | - | PD10 |
| 40 | PD11 | - | PD11 |
| 41 | PD12 | - | PD12 |
| 42 | PD13 | - | PD13 |
| 43 | PD14 | - | PD14 |
| 44 | PD15 | - | PD15 |
| 45 | GND | - | Ground plane |
| 46 | 5V | - | +5V rail |
Header 2 properties
| Name | Unknown |
| Reference | J2 |
| Type | Pin header (2.54mm, 25x2, male) |
Header 2 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 3V3 | - | +3.3V rail |
| 2 | GND | - | Ground plane |
| 3 | PC15 | - | PC15 |
| 4 | PC14 | - | PC14 |
| 5 | PC13 | - | PC13 |
| 6 | PE6 | - | PE6 |
| 7 | PE5 | - | PE5 |
| 8 | PE4 | - | PE4 |
| 9 | PE3 | - | PE3 |
| 10 | PE2 | - | PE2 |
| 11 | PE1 | - | PE1 |
| 12 | PE0 | - | PE0 |
| 13 | PB9 | - | PB9 |
| 14 | PB8 | - | PB8 |
| 15 | PB7 | - | PB7 |
| 16 | PB6 | - | PB6 |
| 17 | PB5 | - | PB5 |
| 18 | PB4 | - | PB4 |
| 19 | PB3 | - | PB3 |
| 20 | PD7 | - | PD7 |
| 21 | PD6 | - | PD6 |
| 22 | PD5 | - | PD5 |
| 23 | PD4 | - | PD4 |
| 24 | PD3 | - | PD3 |
| 25 | PD2 | - | PD2 |
| 26 | PD1 | - | PD1 |
| 27 | PD0 | - | PD0 |
| 28 | PC12 | - | PC12 |
| 29 | PC11 | - | PC11 |
| 30 | PC10 | - | PC10 |
| 31 | PA15 | - | PA15 |
| 32 | PA14 | - | PA14 |
| 33 | PA13 | - | PA13 |
| 34 | PA12 | - | PA12 |
| 35 | PA11 | - | PA11 |
| 36 | PA10 | - | PA10 |
| 37 | PA9 | - | PA9 |
| 38 | PA8 | - | PA8 |
| 39 | PC9 | - | PC9 |
| 40 | PC8 | - | PC8 |
| 41 | PC7 | - | PC7 |
| 42 | PC6 | - | PC6 |
| 43 | 5V | - | +5V rail |
| 44 | GND | - | Ground plane |
| 45 | 3V3 | - | +3.3V rail |
| 46 | 3V3 | - | +3.3V rail |
| 47 | BOOT1 | - | PB2 |
| 48 | BOOT0 | - | BOOT0 |
| 49 | GND | - | Ground plane |
| 50 | GND | - | Ground plane |
Main USB connector properties
| Name | USB |
| Reference | CN3 |
| Type | USB Mini |
Main USB connector pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | VCC | +5V rail |
| 2 | - | D- | PA11 |
| 3 | - | D+ | PA12 |
| 4 | - | ID | N.C. |
| 5 | - | GND | Ground plane |
Serial USB connector properties
| Name | USB-232 |
| Reference | CN4 |
| Type | USB Mini |
Serial USB connector pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | VCC | +5V rail |
| 2 | - | D- | CH340 Pin 6 |
| 3 | - | D+ | CH340 Pin 5 |
| 4 | - | ID | N.C. |
| 5 | - | GND | Ground plane |
JTAG header properties
| Name | JTAG |
| Reference | CN1 |
| Type | IDC (2.54mm, 10x2, male) |
JTAG header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | VCC | +3.3V rail |
| 2 | - | VCC | +3.3V rail |
| 3 | - | TRST | PB4 |
| 4 | - | GND | Ground plane |
| 5 | - | TDI | PA15 |
| 6 | - | GND | Ground plane |
| 7 | - | TMS / SWDIO | PA13 |
| 8 | - | GND | Ground plane |
| 9 | - | TCLK / SWCLK | PA14 |
| 10 | - | GND | Ground plane |
| 11 | - | RTCK | N.C. |
| 12 | - | GND | Ground plane |
| 13 | - | TDO / SWO | PB3 |
| 14 | - | GND | Ground plane |
| 15 | - | RESET | NRST |
| 16 | - | GND | Ground plane |
| 17 | - | N.C. | N.C. |
| 18 | - | GND | Ground plane |
| 19 | - | N.C. | +5V rail |
| 20 | - | GND | Ground plane |
SD-card connector properties
| Name | TF |
| Reference | CN2 |
| Type | microSD |
SD-card connector pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | DAT2 | N.C. |
| 2 | - | CD/DAT3 | PC11 |
| 3 | - | CMD | PD2 |
| 4 | - | VDD | +3.3V rail |
| 5 | - | CLK | PC12 |
| 6 | - | VSS | Ground plane |
| 7 | - | DAT0 | PC8 |
| 8 | - | DAT1 | N.C. |
| 9 | - | CD | N.C. |
| 10 | - | Body | Ground plane |
TFT LCD header properties
| Name | TFT |
| Reference | J3 |
| Type | Pin header (2.54mm, 16x2, female) |
TFT LCD header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | GND | - | Ground plane |
| 2 | PE1 | - | PE1 |
| 3 | PD10 | - | PD10 |
| 4 | PD9 | - | PD9 |
| 5 | PD8 | - | PD8 |
| 6 | PE15 | - | PE15 |
| 7 | PE14 | - | PE14 |
| 8 | PE13 | - | PE13 |
| 9 | PE12 | - | PE12 |
| 10 | PE11 | - | PE11 |
| 11 | PE10 | - | PE10 |
| 12 | PE9 | - | PE9 |
| 13 | PE8 | - | PE8 |
| 14 | PE7 | - | PE7 |
| 15 | PD1 | - | PD1 |
| 16 | PD0 | - | PD0 |
| 17 | PD15 | - | PD15 |
| 18 | PD14 | - | PD14 |
| 19 | PD4 | - | PD4 |
| 20 | PD5 | - | PD5 |
| 21 | PD11 | - | PD11 |
| 22 | PD7 | - | PD7 |
| 23 | PA5 | - | PA5 |
| 24 | PB7 | - | PB7 |
| 25 | PA7 | - | PA7 |
| 26 | PA6 | - | PA6 |
| 27 | PB6 | - | PB6 |
| 28 | PD13 | - | PD13 |
| 29 | 5V | - | +5V rail |
| 30 | PC2 | - | PC2 |
| 31 | 3V3 | - | +3.3V rail |
| 32 | GND | - | Ground plane |
nRF24L01 module header properties
| Name | nRF24L01 |
| Reference | J8 |
| Type | Pin header (2.54mm, 4x2, female) |
nRF24L01 module header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | GND | GND | Ground plane |
| 2 | 3V3 | VCC | +3.3V rail |
| 3 | PE4 | CE | PE4 |
| 4 | PE2 | CSN | PE2 |
| 5 | PB3 | SCK | PB3 |
| 6 | PB5 | MOSI | PB5 |
| 7 | PB4 | MISO | PB4 |
| 8 | PC13 | IRQ | PC13 |
ESP-1 module header properties
| Name | ESP-1 |
| Reference | J9 |
| Type | Pin header (2.54mm, 4x2, female) |
ESP-1 module header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | GND | GND | Ground plane |
| 2 | PB11 | GPIO1 | PB11 |
| 3 | PC0 | GPIO2 | PC0 |
| 4 | PA0 | EN | PA0 |
| 5 | PC1 | GPIO0 | PC1 |
| 6 | PC3 | RST | PC3 |
| 7 | PB10 | GPIO3 | PB10 |
| 8 | 3V3 | VCC | +3.3V rail |
Devices
CH340 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | GND | Ground plane |
| 2 | - | TXD | PA9 via J7 |
| 3 | - | RXD | PA10 via J7 |
| 4 | - | V3 | N.C. |
| 5 | - | UD+ | D+ pin on CN4 |
| 6 | - | UD- | D- pin on CN4 |
| 7 | - | XI | Crystal Y1 |
| 8 | - | XO | Crystal Y1 |
| 9 | - | CTS# | N.C. |
| 10 | - | DSR# | N.C. |
| 11 | - | RI# | N.C. |
| 12 | - | DCD# | N.C. |
| 13 | - | DTR# | Pull-up R16 to +3.3V rail |
| 14 | - | RTS# | N.C. |
| 15 | - | R232 | N.C. |
| 16 | - | VCC | N.C. |
HK24C04 properties
| Name | Unknown |
| Reference | U5 |
| Manufacturer | HangShun |
| Part | HK24C04 |
| Marking | HK24C04 |
| Datasheet | Unavailable |
| Package | SOP 8 pins |
| Description | 4KiB I2C EEPROM |
HK24C04 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | A0 | Ground plane |
| 2 | - | A1 | Ground plane |
| 3 | - | A2 | Ground plane |
| 4 | - | GND | Ground plane |
| 5 | - | SDA | PB7 |
| 6 | - | SCL | PB6 |
| 7 | - | WP | Ground plane |
| 8 | - | VCC | +3.3V rail |
W25Q16DV properties
| Name | Unknown |
| Reference | U6 |
| Manufacturer | Winbond Electronics Corporation |
| Part | W25Q16DV |
| Marking | W25Q16DVSIG |
| Datasheet | W25Q16DV.pdf |
| Package | SOIC 8 pins |
| Description | 2MiB Dual/Quad SPI FLASH |
W25Q16DV pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | /CS | +3.3V rail via 4.7kΩ resistor |
| 2 | - | DO | PA6 |
| 3 | - | /WP | +3.3V rail |
| 4 | - | GND | Ground plane |
| 5 | - | DI | PA7 |
| 6 | - | CLK | PA5 |
| 7 | - | /HOLD | +3.3V rail |
| 8 | - | VCC | +3.3V rail |
HS0038 properties footprint
| Name | Unknown |
| Reference | J4 |
| Manufacturer | Vishay Intertechnology, Inc. |
| Part | HS0038 |
| Marking | Unknown |
| Datasheet | HS0038B.pdf |
| Package | Mold 3 pins |
| Description | Infrared receiver |
HS0038 pins footprint
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | D | OUT | PA1 |
| 2 | - | GND | Ground plane |
| 3 | + | VCC | +3.3V rail |
DS18B20 properties footprint
| Name | Unknown |
| Reference | J5 |
| Manufacturer | Maxim Integrated Products, Inc. |
| Part | DS18B20 |
| Marking | Unknown |
| Datasheet | DS18B20.pdf |
| Package | TO-92 3 pins |
| Description | 1-wire temperature sensor |
DS18B20 pins footprint
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | GND | Ground plane |
| 2 | D | DQ | PD12 |
| 3 | + | VDD | +3.3V rail |